<template>
  <div class="register-container">
    <NavBar>
      <template #default> 注册 </template>
    </NavBar>

    <div class="register-content">
      <div class="logo">
        <el-icon color="#ff5000" :size="60">
          <ShoppingTrolley />
        </el-icon>
      </div>

      <div class="register-form">
        <div class="input-container">
          <el-input
            v-model="userName"
            placeholder="请输入账号"
            class="custom-input"
            :prefix-icon="User"
            clearable
          />
        </div>

        <div class="input-container">
          <el-input
            v-model="userPassword"
            placeholder="请输入密码"
            type="password"
            class="custom-input"
            :prefix-icon="Lock"
            show-password
            clearable
          />
        </div>

        <div class="input-container">
          <el-input
            v-model="confirmPassword"
            placeholder="请再次输入密码"
            type="password"
            class="custom-input"
            :prefix-icon="Lock"
            show-password
            clearable
          />
        </div>

        <div class="input-container">
          <el-input
            v-model="mobile"
            placeholder="请输入手机号 (可选)"
            class="custom-input"
            :prefix-icon="Iphone"
            clearable
          />
        </div>

        <div class="input-container">
          <el-input
            v-model="email"
            placeholder="请输入邮箱 (可选)"
            class="custom-input"
            :prefix-icon="Message"
            clearable
          />
        </div>

        <div class="input-container gender-select-container">
          <el-select
            v-model="gender"
            placeholder="请选择性别 (可选)"
            class="custom-select"
          >
            <el-option label="未知" :value="0" />
            <el-option label="男" :value="1" />
            <el-option label="女" :value="2" />
          </el-select>
        </div>

        <div class="input-container avatar-upload-container">
          <el-upload
            class="avatar-uploader"
            action="#"
            :show-file-list="false"
            :auto-upload="false"
            :on-change="handleAvatarChange"
            :limit="1"
          >
            <img v-if="avatarPreview" :src="avatarPreview" class="avatar" />
            <el-icon v-else class="avatar-uploader-icon"><Plus /></el-icon>
          </el-upload>
          <span class="upload-tip">点击上传头像 (可选)</span>
        </div>

        <el-button
          class="register-btn"
          type="primary"
          @click="handleRegister"
          :loading="isRegistering"
        >
          注册
        </el-button>
        <br />
        <br />
        <el-button class="login-back-btn" @click="goToLogin">
          已有账号，去登录
        </el-button>
      </div>
    </div>

    <div class="bottom-cover">
      <div class="bottom-links">
        <span @click="goToAbout">关于</span>
        <span class="divider">|</span>
        <span @click="goToResetPassword">找回密码</span>
      </div>
    </div>
  </div>
</template>

<script setup>
import NavBar from "../../components/common/NavBar.vue";
import { ref } from "vue";
import {
  ShoppingTrolley,
  User,
  Lock,
  Iphone,
  Message,
  Plus,
} from "@element-plus/icons-vue";
import router from "@/router";
import { ElMessage } from "element-plus";

// 导入 Pinia user store
import { useUserStore } from "@/stores/user";

// 表单数据
const userName = ref("zy");
const userPassword = ref("aaaaaa");
const confirmPassword = ref("aaaaaa");
const mobile = ref("15386490869"); // 新增手机号
const email = ref("1069595532@qq.com"); // 新增邮箱
const gender = ref(1); // 新增性别，默认未知
const avatarFile = ref(null); // 新增头像文件
const avatarPreview = ref(""); // 用于头像预览

const isRegistering = ref(false); // 用于控制注册按钮的加载状态

// 获取 user store 实例
const userStore = useUserStore();

/**
 * 处理头像文件选择
 * @param {File} file - ElUpload 触发的 File 对象
 */
const handleAvatarChange = (file) => {
  avatarFile.value = file.raw; // ElUpload 会返回一个包装过的对象，我们需要原始的 File 对象
  // 生成预览 URL
  if (file.raw) {
    avatarPreview.value = URL.createObjectURL(file.raw);
  } else {
    avatarPreview.value = "";
  }
};

/**
 * 处理注册逻辑
 */
const handleRegister = async () => {
  // 1. 客户端表单验证
  if (
    userName.value.trim() === "" ||
    userPassword.value.trim() === "" ||
    confirmPassword.value.trim() === ""
  ) {
    ElMessage.warning("账号、密码和确认密码不能为空！");
    return;
  }
  if (userPassword.value !== confirmPassword.value) {
    ElMessage.warning("两次输入的密码不一致！");
    return;
  }
  if (userPassword.value.length < 6 || userPassword.value.length > 100) {
    ElMessage.warning("密码长度必须在6到100个字符之间！");
    return;
  }
  if (userName.value.length < 3 || userName.value.length > 50) {
    ElMessage.warning("账号长度必须在3到50个字符之间！");
    return;
  }
  // 可以在这里添加手机号和邮箱的格式校验
  // 例如，简单的邮箱校验
  if (email.value && !/^\S+@\S+\.\S+$/.test(email.value)) {
    ElMessage.warning("请输入有效的邮箱地址！");
    return;
  }
  // 简单的手机号校验 (只检查是不是数字，更严格的校验请用正则)
  if (mobile.value && !/^\d+$/.test(mobile.value)) {
    ElMessage.warning("请输入有效的手机号！");
    return;
  }

  isRegistering.value = true; // 开始注册，设置加载状态为 true

  try {
    // 2. 构建 FormData 对象
    // 当需要上传文件时，必须使用 FormData
    const formData = new FormData();
    formData.append("userName", userName.value.trim());
    formData.append("userPassword", userPassword.value.trim());
    // 可选字段，只在有值时添加，避免发送空字符串
    if (mobile.value.trim()) {
      formData.append("mobile", mobile.value.trim());
    }
    if (email.value.trim()) {
      formData.append("email", email.value.trim());
    }
    // 性别是数字，即使为0也发送
    formData.append("gender", gender.value);
    // 如果有头像文件，则添加到 FormData
    if (avatarFile.value) {
      formData.append("avatarFile", avatarFile.value);
    }
    // 注意：MyUserDTO 中的 roles 和 userStatus 在注册时通常由后端设置默认值或根据业务逻辑分配，
    // 前端一般不需要在注册表单中提供。如果后端需要，你可以根据需求添加。

    // 3. 调用 Pinia store 中的注册方法
    // 假设 userStore.register 方法现在接收 FormData 对象
    const res = await userStore.register(formData);
    // 重点：在这里检查后端返回的业务状态码
    if (res && res.data.code === 1) {
      // 确保res存在且code为1
      ElMessage.success("注册成功！请登录。");
      router.push("/login"); // 注册成功后跳转到登录页面
    } else {
      // 理论上，如果 res.code 不是 1，store 已经抛出了 Error。
      // 但为了健壮性，如果 store 返回了非成功状态但没有抛出错误（不应该发生），这里可以再处理一次。
      // 不过，根据前面的 store 修改，这里应该只会收到成功的 res，或捕获到 error。
      ElMessage.error(res.msg || "注册失败，请稍后再试。");
    }
  } catch (error) {
    // 5. 处理注册失败的错误
    console.error("注册请求失败:", error);
    const errorMessage =
      error.message || error.response?.data?.msg || "注册失败，请稍后再试。";
    ElMessage.error(errorMessage);
  } finally {
    // 无论成功或失败，最后都重置加载状态
    isRegistering.value = false;
  }
};

/**
 * 跳转到登录页面
 */
const goToLogin = () => {
  router.push("/login");
};

/**
 * 跳转到关于页面
 */
const goToAbout = () => {
  router.push("/about");
};

/**
 * 跳转到找回密码页面
 */
const goToResetPassword = () => {
  router.push("/reset-password");
};
</script>

---

<style scoped>
.register-container {
  height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: white; /* 纯白背景 */
}

.register-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  margin-top: 20px;
}

.logo {
  margin-bottom: 40px;
  display: flex;
  justify-content: center;
}

.register-form {
  width: 100%;
  max-width: 300px;
}

.input-container {
  margin-bottom: 20px;
}

/* 统一输入框样式 */
:deep(.custom-input .el-input__wrapper) {
  border-radius: 25px;
  padding: 0 20px;
  height: 50px;
  box-shadow: 0 0 0 1px #dcdfe6 inset;
}

:deep(.custom-input .el-input__wrapper:hover) {
  box-shadow: 0 0 0 1px #c0c4cc inset;
}

:deep(.custom-input .el-input__wrapper.is-focus) {
  box-shadow: 0 0 0 1px #ff5000 inset;
}

:deep(.custom-input .el-input__inner) {
  height: 48px;
}

/* Element Plus Select 样式 */
.custom-select {
  width: 100%;
}
:deep(.custom-select .el-input__wrapper) {
  border-radius: 25px;
  padding: 0 20px;
  height: 50px;
  box-shadow: 0 0 0 1px #dcdfe6 inset;
}
:deep(.custom-select .el-input__wrapper:hover) {
  box-shadow: 0 0 0 1px #c0c4cc inset;
}
:deep(.custom-select .el-input__wrapper.is-focus) {
  box-shadow: 0 0 0 1px #ff5000 inset;
}

/* 头像上传样式 */
.avatar-upload-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 20px;
}

.avatar-uploader .avatar {
  width: 100px;
  height: 100px;
  display: block;
  border-radius: 50%; /* 圆形头像 */
  object-fit: cover;
}
.avatar-uploader .el-upload {
  border: 1px dashed var(--el-border-color);
  border-radius: 50%; /* 圆形上传区域 */
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--el-transition-duration-fast);
  width: 100px;
  height: 100px;
  display: flex; /* Flexbox for centering icon */
  justify-content: center;
  align-items: center;
}
.avatar-uploader .el-upload:hover {
  border-color: #ff5000;
}
.el-icon.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 100px;
  height: 100px;
  text-align: center;
}
.upload-tip {
  margin-top: 10px;
  font-size: 14px;
  color: #606266;
}

/* 注册按钮样式 */
.register-btn {
  width: 100%;
  height: 50px;
  border-radius: 25px;
  background-color: #ff5000;
  border: none;
  font-size: 16px;
  font-weight: bold;
}

.register-btn:hover {
  background-color: #ff3a00;
}

.login-back-btn {
  width: 100%;
  height: 50px;
  border-radius: 25px;
  background-color: #ffffff;
  border: none;
  font-size: 16px;
  font-weight: bold;
  border: 1px solid #000000;
}

.login-back-btn:hover {
  color: #3b3b3b;
  background-color: #f5f5f5;
}

/* 覆盖底部导航栏的空白区域 */
.bottom-cover {
  height: 120px;
  background-color: white;
  z-index: 1000;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  padding-bottom: 30px;
}

.bottom-links {
  display: flex;
  align-items: center;
  font-size: 14px;
}

.bottom-links span {
  cursor: pointer;
  color: #606266;
  transition: color 0.3s;
}

.bottom-links span:hover {
  color: #ff5000;
}

.bottom-links .divider {
  margin: 0 10px;
  color: #dcdfe6;
  cursor: default;
}
</style>